Attack the Geek — Michael R. Underwood

Ree Reyes, urban fantasista and Geekomancer extraordinaire, is working her regular drink-slinger shift at Grognard's bar-and-gaming salon when everything goes wrong. The assorted magic wielders of the city's underground have come to test their battle skills via RPGs like D&D, V:TES, White Wolf, and the like. All the usuals are there: her ex-mentor Eastwood, Drake (the man-out-of-time adventurer), and, of course, Grognard himself (her boss and a brewer of beer that act as magic potions). However, it's the presence of these and other “usuals” that makes all the trouble. For, a nemesis from Eastwood and Ree's past decides to finally take her revenge not just on those two, but on every self-styled “hero” in the city who happens to have crossed her at one point or another. When wave after wave of monsters besiege Grogrnard's store, if Ree & Co. are going to survive, they're going to have to work together. And avoid the minotaur. That's always a good rule of thumb.